Looking For Bearing Kit For 2023 Grand Design 303RLS With 5,200 lb Axles

Updated 09/23/2025 | Published 09/18/2025

Question:

Confused by axle weight ratings vs GVWR. I have a 2023 Grand Design 303RLS, the sticker on the axles says 5200 lb weight rating, the trailer GVWR is 11995 lbs. so how is 10400 total axle weight rating even Safe. I became aware of this when I was looking to get new wheel bearings and grease seals. Which I still need. Please help this make sense. Plus let me know which parts to get. Bearings etc.. Thanks,

asked by: John G

Expert Reply:

Hello John, thanks for reaching out. We actually get this question a lot. It is common for your axles to be underrated for the GVWR. Tons of campers do this. The reasoning is the axles do not actually carry the full weight of the trailer. 10%-15% of the trailer weight is on the hitch or the jack. So your trailer is still safe to tow, even if you are fully loaded up to the GVWR.

That said, we do offer a bearing kit for the 5,200 lb axles, which is the following:

- Bearing Kit, LM67048/25580 Bearings, 10-36 Seal # BK3-300

Were there any other parts you were needing? Or just the bearings?

let me know if there is anything else I can do to help.

expert reply by: Jesse M

BK3-300
(click to enlarge)

John G.

9/23/2025

Jesse, Thanks for the reply, I can see the logic in the answer. However if you do the math with the numbers from the Grand Design website, the hitch/pin carries 16.5% of the total weight. (Assuming the everything is loaded Exactly right) So again with the GD factory numbers you have a 265 pound cushion over the MAX axle rating. That doesn’t take into account Bouncing over the bumpy roads everywhere. It may be legal but it still doesn’t sound Safe. Thanks, John G.

Jesse M.

9/23/2025

@JohnG I definitely hear where you are coming from, and I can't say I disagree. This is just the nature of the RV/camper industry. Not every camper but many of them use axles that are the bare minimum for holding the total weight. I assume this is in an effort to cut costs.